OpenSearch Ports 9200/9300

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🔌 Default Ports

9200

tcp

HTTP REST API

9300

tcp

Node communication

9600

tcp

Performance Analyzer

📦 Installation Command

wget -qO - https://artifacts.opensearch.org/publickeys/opensearch.pgp | gpg --dearmor -o /usr/share/keyrings/opensearch.gpg && echo 'deb [signed-by=/usr/share/keyrings/opensearch.gpg] https://artifacts.opensearch.org/releases/bundle/opensearch/2.x/apt stable main' > /etc/apt/sources.list.d/opensearch.list && apt update && apt install opensearch

⚙️ Configuration Files

/etc/opensearch/opensearch.yml
/etc/opensearch/jvm.options
/etc/opensearch/opensearch-security/

📂 Default Directories

config: /etc/opensearch
data: /var/lib/opensearch
logs: /var/log/opensearch
plugins: /usr/share/opensearch/plugins

🔐 Default Credentials

Username:admin

Password:admin

💡 CHANGE IMMEDIATELY! Default is admin/admin. Use security plugin to manage users.

📌 Dependencies

openjdk-17-jdk

⚠️ Conflicts

elasticsearch (same ports) Port: elasticsearch

✅ Works With

opensearch-dashboardslogstashdata-prepper

🛡️ Security Notes

Change default admin password, configure TLS, use security plugin, set proper JVM heap

❓ Frequently Asked Questions

What ports does OpenSearch use?

OpenSearch uses 9200 for HTTP and 9300 for transport, same as Elasticsearch.

OpenSearch vs Elasticsearch?

OpenSearch is AWS's open-source fork after Elastic changed licensing.

Where is OpenSearch config?

Config at /etc/opensearch/opensearch.yml.